1In a 1957 episode called "The Big Forget", Clark revealed his true identity to Lois and Jimmy, but they forget everything after inhaling an antimemory vapor created by Professor Pepperwinkle. Source: Total Television, McNeil, 1/1/1900

Location of the world's largest Superman museum:

Metropolis, IllinoisSeeking to capitalize on the similarity of its name and the city where Superman patrolled the skies, the town fathers have developed not only the world's largest Superman museum with some 75,000 artifacts, but also the world's largest Superman statue. Source: Muncie Star Press, 7/2/2006